Pyrazine-bridged copper(I) iodide coordination polymers: Control of chain separation through ligand design

Synthesis, Structure, and Characterization of Dinuclear Copper(I) Halide Complexes with P^N Ligands Featuring Exciting Photoluminescence Properties

“…42,79 With pyridine-type ligands L and an equimolar stoichiometry the complexes frequently form [CuXL] 4 cubane-like structures or one-dimensional ladder chains [CuXL] ∞ consisting of fused Cu 2 X 2 subunits. 42,52,80 Changing the stoichiometry to a ratio of 1:1:2 or even 1:1:3 results in either a [(CuX) 2 L 4 ] form of complex with an isolated rhombohedron Cu 2 X 2 core or a mononuclear complex [CuIL 3 ]. 42,81,82 Another dimeric structure with a rhombic Cu 2 X 2 core featuring the composition [Cu 2 X 2 L 2 (R 3 P) 2 ] can be obtained using a mixed ligand system with bulky ligands like triphenylphosphane blocking further aggregation.…”

“…Copper(I) halide complexes exhibit many coordination motifs depending on the coordinating ligand as well as the molar ratios between ligand and metal salt. , With pyridine-type ligands L and an equimolar stoichiometry the complexes frequently form [CuXL] 4 cubane-like structures or one-dimensional ladder chains [CuXL] ∞ consisting of fused Cu 2 X 2 subunits. ,, Changing the stoichiometry to a ratio of 1:1:2 or even 1:1:3 results in either a [(CuX) 2 L 4 ] form of complex with an isolated rhombohedron Cu 2 X 2 core or a mononuclear complex [CuIL 3 ]. ,, Another dimeric structure with a rhombic Cu 2 X 2 core featuring the composition [Cu 2 X 2 L 2 (R 3 P) 2 ] can be obtained using a mixed ligand system with bulky ligands like triphenylphosphane blocking further aggregation. − Nevertheless, due to their di-, oligo-, or polymeric structure, once precipitated from solution, these complexes are usually only sparingly soluble in organic solvents.…”

Heteroleptic, Dinuclear Copper(I) Complexes for Application in Organic Light-Emitting Diodes

“…Copper(I) complexes with either phosphane, pyridine, or bridging P^N ligands are well-known for their rich coordination chemistry including mono-, di-, tri-, tetra-, or polynuclear complexes. ,− These complexes can be prepared systematically by controlling the reaction stoichiometry. , On the basis of our experiences with dinuclear complexes containing three identical P^N ligands with one of them acting as a bridging ligand and the other as ancillary ligands, coordinated solely via their phosphorus atom, our approach was to substitute these two monodentate ligands with two commercially available triphenylphosphine ligands. This approach not only simplifies the synthetic effort dramatically but also is also very modular because the emission and the solubility can be tuned independently via the bridging ligand and the ancillary ligands, respectively.…”

Copper(I) Complexes Based on Five-Membered P∧N Heterocycles: Structural Diversity Linked to Exciting Luminescence Properties

“…A great deal of research has focused on the development of new concepts for light and display applications and for energy-generating concepts based on organic electronics. − Luminescent metal complexes based on Ir, Pt, and Os are promising candidates for applications as emitting materials in organic light-emitting devices, because of their color tunability and their high efficiencies. − However, since these emitting materials are based on rare and expensive metals, luminescent complexes based on more abundant d 10 metals such as Cu(I), Ag(I), and Au(I) have been brought to the forefront of current research. − Copper complexes offer exciting photoluminescence characteristics along with a high structural diversity and, furthermore, have been successfully tested as emitting compounds in organic light-emitting devices during the last few years. − A large number of mono-, di-, tri-, and tetranuclear copper(I) complexes are known, and their formation often depends on the nature of the ligand used for complexation, i.e. whether it is monodentate, bidentate (chelating or bridging), or tridentate, as well as the ligand-to-metal ratio used for the complexation reaction. ,− For example, recently reported 1,2,3-triazole-based ClickPhos-type ligands and copper(I) halides form di-, tri-, and tetranuclear complexes depending on the substitution pattern of the ligand and on the so...…”